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Finding the Fourth Proportional to 81,262.98, 112,166.98 and 47,286.82

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Solution

The fourth proportional to 81,262.98, 112,166.98 and 47,286.82 is: 65,269.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,262.98 : 112,166.98 = 47,286.82 : x
  2. Step 2: Convert to fraction form
    81,262.98/112,166.98 = 47,286.82/x
  3. Step 3: Cross multiply
    81,262.98x = 112,166.98 × 47,286.82
  4. Step 4: Simplify right side
    81,262.98x = 5,304,019,793.20
  5. Step 5: Solve for x
    x = 5,304,019,793.20/81,262.98
  6. Step 6: Final answer
    x = 65,269.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.